查询词典 phase transition

Evolution of a phase transition system is an important topic with many applications. The crucial difficulty lies in the instability of ellipticity.

相变系统随时间的演化过程是一个有着广泛应用背景的重要理论问题，其核心困难在于椭圆不稳定性。

Wesuggest that the shifting endotherm originates from the transition of oxygen-intercalated C60 to a merohedral disordered phase,in which the rotation of fullerenemolecules is partially impeded by oxygen.

我们建议那个移动的吸热峰来自于周围有氧的那部份C60，从简立方相转变到不全无序相。不全无序相的形成是由于氧对C60转动的部份阻碍所造成。

The experiment further demonstrates that the density and seismic-wave velocity jumps are attributed to the phase transition of olivine and enstatite minerals.

实验结果进一步证明，在地幔中存在的两个地震波不连续界面是由橄榄石、顽火斜方辉石等矿物的相变引起的。

On the other hand, we observe a pressure induced phase transition from enstatite to ringwoodite under pressure of 20 GPa by X-ray diffraction. The conductivity of ringwoodite with water at 20 GPa is in good agreement with the available measurements of hydrous ringwoodite.

另外，X射线衍射实验表明压力（20 GPa）诱发了顽火辉石向林伍德石的相变，这是我们首次在顽火辉石的电导率实验中观测到林伍德石含水相变，而且含水林伍德石的电导率与已有的实验结果相当一致。

Nowdays the idea and methods of ergodic theory are applied to studies of various phenomena in statistical physics and condensed matter physics, for example, the Monte-Carlo simulations, critical phenomena, phase transition and anomalous transport.

遍历理论的思想和方法现今正被应用于统计物理和凝聚态物理等的各种现象，如Monte-Carlo、临界现象、相变、反常输运的分析。

The results show that the thermal expansion coefficient changes respond to crystal phase proportion and transition.

发现样品的热膨胀系数随温度的变化行为是与样品中析出的晶相种类及析出量随温度的变化规律相对应的。

On the basis of the kinetic equation of substrate reaction in the presence of urea or guanidine hydrochloride, all microscopic kinetic constants for the free enzyme and enzyme-substrate binary and ternary complexes have been determined. The results of the present studies indicate that:①In the presence of urea or guanidine hydrochloride, enzyme-substrate complexes lose their activity less rapidly than the free enzyme. Therefore, both substrates, NADPH and 7, 8-dihydrofolate, protect dihydrofolate reductase against inactivation.②The denaturation of dihydrofolate reductase by urea follows single-phase kinetics, and changes in enzyme activity and tertiary structure proceed simultaneously in the unfolding process, so it may be an"all or none"process.③The GdnHCl-induced unfolding of the dihydrofolate shows a biphasic transition, while the change in the enzyme activity is a single exponential process. The rate constant of inactivation is consistent with that of the fast conformational change. Therefore, the kinetic intermediate of protein unfolding should be a partially folded and inactive form.

我们根据在脲或盐酸胍存在下的底物反应动力学方程求得游离酶和酶底物二元、三元复合物的微观动力学常数，结果表明：①酶-底物二元、三元复合物的失活速度明显慢于游离酶，说明两个底物二氢叶酸和NADPH对酶的失活都具有一定程度的保护作用；②在脲作用下，酶的失活和构象变化均为单指数项过程，而且酶的活力丧失和三级结构变化是同时发生的，说明二氢叶酸还原酶的脲变性可能是一个"全或无"的两态过程；③在盐酸胍作用下，酶的构象变化为两相过程，而失活则是单指数项过程，酶分子构象变化的快相速度常数与失活速度常数基本一致，因此我们认为二氢叶酸还原酶的盐酸胍变性过程中存在一个没有活力、但仍具备一定空间结构的变性中间体。

With feudality's ending and the transition to democracy, the period from the late Qing to the early times of Minguo is a especially special phase in the Chinese modern history.

晚清民初的几十年是中国近代史上极为特殊的时期。数千年沿袭的封建制度终于走向穷途，形式上被一种新的民主政体所代替，但是积袭在人们头脑中封建陈腐的思想却不是一朝一夕既能摆脱的。

The relationship of reactants, transition states, intermediates and products in affirmed by IRC. In order to study the influence of solvent, the reactions is optimize and calculate by SCRF at the same level of gaseous phase adopting Onsager model.

为研究溶剂的影响，采用基于Onsager模型的自洽反应场理论，在与气相相同的计算水平(B3LYP／6-311+G~*)上，分别进行溶剂的SCRF全优化计算。

The flow regime transition criteria for the boiling water two-phase flow in horizontal rectan- gular narrow channels(1×20mm,2×20mm) were theoretically explored.

对矩形窄缝通道(1×20mm，2×20mm)中水沸腾的汽液两相流动流型转化准则进行了研究。

It also analyzes the feature and development of semi-finish grinding and finish grinding by roller press.

同时进行了辊压机半终粉磨和终粉磨系统的特点和发展分析。

When I got there, water was dripping slowly from the ceiling and forming a pool on the floor.

当我到那里的时候，水是慢慢地从天花板滴而且形成在地板上的一个池。